Tubular box



Feb. 17, 1931. E. w. LABOMBARDE TUBULAR BOX Filed Aug. 19, 1929 n we HF.

Patented Feb. 17, 1931 UNITED'ISTATES PATENT OFFICE,

ELIE W. LABOKBABDE, 0F NASHUA, NEW HAMPSHIRE TUBULAR BOX Application filed August 19, 1929. Serial No. 386,752.

ture-proof and air-tight.

With said object in view, the invention consists in the structure of the containers and the blanks from which they are'ma'de, substantially as hereinafter described and claimed. 1

@f the accompanying drawings Figure 1 is a plan view of the blank 1n ts first condition prior to any folding,the midportion of the blank being illustrated as broken out, to indicate that it may be of any width according to the capacity whlch the container is to have.

Fi re 2 represents a section on line 2--2 of Figure 1.

Figure 3 is a view similar to Figure 1 but illustrating the blank in its second cond tion.

Figure 4 represents a section on line 44 of Figure 3.

Figure 5 is a top pleted box.

Figure 6 represents a section on line 6-6 of Flgure 5, on a larger scale.

Figure 7 is a perspective view of the conplan view of the comtainer made up from one of the blanks as illustrated. V

Similar reference characters designate similar parts or features in all of the views. Referring. to Figures 1 and 2, the blank is died out and creased to form body panels 12, each having-a tapering lip 13, the latter being transversely grooved as at 14 in a straight line from one end. of the body strip to the other. The sheet from which the blanks are died out preferably consists of two or more plies, treated to render the material moisturemay deferred until t e boxes are comproofgeor the moistureroofing treatment pleted and then effected b boxes in parafline and then raining them.

The creases which define the panels 12 of the strip are indicated at at, said creases being paralle and in line with. the recesses or notches which separate the lips 13. Extending lengthwise of the stri are two creases y 3 which are to define the ines on which the lips 13 are to be folded as presently described. At one end of the strip is a projecting flap 15 the ends of which are in line with the creases After the blanks have been cut out and grooved and creased as so far described, they may be stored until they are to be converted immersing the to the condition illustrated by Figures 3 and 4, or to final receptacle condition. To convert them to the condition illustrated by Figures 3 and 4, stripes of glue 16 (Fig. 1) are first applied lengthwise of the strip, between the creases 3 y and the inner ends of the notches which separate the lips 13 from each other, and then the marginal portions of the strip are folded in on the lines y 3 pressure being exerted on the blank during such foldingl as will collapse the grooved areas 14 into we l-defined shoulders or ledges 17 (Figs. 3 and 4), said ledges being along a line intermediate the length of the folded-back portions of the blank. Such pressure tends to diifuse or spread the glue stripes so as to retain the lips and ledges firmly in their folded condition. In this condition the blanks may be stored or immediately converted to final receptacle condition as will now be described.

stantially cylindrical form and overlap ing the flap 15 at one end onto the outside 0 the panel 12 at the other end, and adhesively securing the overlappin parts, the article is in condition to have the ottom disk 18' inserted to position. Such disk is, of course, of the same shape as the interior of the container. As illustrated, it is octagonal because the body of'the container has eight panels. I do not limitmyself however to such specific shape. If-the blank has but six panels, then the container will be hexagonal in cross section.

Before the bottom disk 18 is inserted in By rolling the blank of Figure 3 to subthe polygonal tube, glue may be applied to its edge or to the top of. the bottom led e 17. Then said disk is firmly seated on sai bottom led and not only serves as the bottom closure or the container but also holds-the tube open in true polygonal shape. For

some uses it is preferable to then coat the in-- cient wax on the upper ledge to result in effective sealing when. the diskis seated on it.

As illustrated in Figures 5 andfl, the upper disk 19 has a slightly curved out 20 whic 1, in practice, is so filled with wax that none of the contents of the receptacle can escape therethrough. When the receptacle is to he opened however, any small implement can be pushed through the curved slit and then emplo ed to lift the disk from its supporting is ge and break the edge seal thereof, and remove it.

Reference has been made to making the containers hexagonal in cross section, instead of octagonal as illustrated. An advantage resulting from making them hexagonal is that when a number of them are stored or shipped side by side, they will have fiat sides bearing against each other, with no waste spaces between, and serving therefore to mutually sustain each other against outward bulging of the walls when the containers are filled. However, whether the containers are hexagonal or octagonal, the sides are less likely to yield to internal pressure than if made rectangular or circular and of paper no thicker l' find suflieient for the form illustrated and described herein. This is hecm the panels, although flat, are not wide enough to permit ready bulging between their marginal crease lines.

The reason for indenting the paper material to form the grooves 1% (Figs. 1 and 2) is that such straight grooving not only partially breaks the material so that when the lips are folded over'as described it is comparatively easy to collapse such grooved portions to the ledge formation illustrated by Figures 3, 4 and 6, but it also renders it cer tain that the completed ledges will be in straight continuous lines entirely around the interior of the containers.

Referring to Figure 1, it will be seen that the notches between the lips 13 extend into, or intersect, the grooved portions 14. The result of this is that when the blank is converted to the condition illustrated by Figure 2, there are converging s aces between the individual sections 0 t e ledges, which spaces are closed up when the blank is folded to complete receptacle form as illustrated by Figure 6 and by dotted lines in Figure 5. Therefore there is no opportunity for liquid contents of the container to escape between anylcrevices in the led es.

aving now descri ed my invention, I claim 1. A blank for the body of a paper receptacle, said blank having parallel crease lines and formed with integral marginal portions folded back and secured between said creases, the said integral folded-back portions bein. creased to provide ledges in line with eacii other at an intermediate point of the lengths a.

of said folded-back portions.

2. A blank for the body of a paper receptacle, said blank being transversely creased to form a pluralit of panels, each panel section having a ackwardly folded tapering hp at each end, and all of the lips at each end of the panels being creased to provide ledges in line with each other at an intermediate point of the lengths of said folded-back portions.

3. A paper container having a tubular body provided with inturned li s at its ends, said inturned li s being crease to provide ledges in line wit each other at an intermediate point of the lengths thereof, and closures engaging said lips.

4:. paper container having a tubular bod provided with inturned lips at its ends, sai inturned lips being creased to provide ledges in line with each other at an intermediate point of the lengths thereof, the said ledges being in close abutting relationship to prevent the passage of air or moisture between them.

5. A paper container of uniform diameter having a multiplicity of fiat sides each of which has iii-turned lips at its ends, said. lips being cr ased to provide ledges in line with each other an intermediate point of the lengths of said lips, a disk permanently signature.

ELIE W. LABOMBABDE.

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